In worm-free woodlands, leaves pile up in drifts on the forest floor. Trees and shrubs in wormless places depend on litter for food.
在没有蚯蚓的林地里，落叶成堆地堆积在森林的地表，树木和灌木丛依靠枯枝落叶层生长。
For years, docs suspected there might be a connection between IBD and our worm-free lifestyle.
多年来，医生们一直怀疑炎症性疾病的高发与人们远离寄生虫的生活方式有关。
For years, docs suspected there might be a connection between IBD and our worm-free lifestyle.
多年来，医生们一直怀疑炎症性疾病的高发与人们远离寄生虫的生活方式有关。
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